Improvement in bungs and bung-inserters



W. KR-VOMER. BUNG-AN'D BUN'G INSERTER..

No.`19`0,224. l Patenteamay 1, 1877.

N. PERS, FHTO-LITMDGRAPHER, WASHINGTON D C UNITED S'Ivrns PATET v `WILLIAM Keenan., oFsnN FRANCISCO', CALIFORNIA.

IMPROVEMENT in BuNGs AND `BuNe-iIasi-:'larlgtas.

Specification forming partof Letters Patent No. 190,224, dated May: 1,1877; application iled July 28,1875.

To all whom it may concern:

Be it known that I, WlLLIAM KROMER, of San Francisco, inthe county of San Franciscoand State of California, have invented certhe Wrench. Fig. 4 is a longitudinal vertical section of my improved bushing inserter; Fig. 5, a similar view of the bushing; Fig. 6, a sectional view of the bung. Fig. 7 is a side elevation of the same, and Fig. 8 a top plan view of the bung and bushing.

This invention has relation to metallic bungs, such as are screwed into metallic bushings previously secured in the barrel-stave.

Ordinarily, these bungs are screwed down upon a leather washer, which is placed between a seat in the bushing and the bung, and by pressing said washer tightness is secured. This class of metallic bungs have in their practical use many objections, from the fact that the bung and bushing, acting into each other, being cylindrically formed, it requires from six to eight turns of the bung in order to bring it tightly down upon the leather washer, besides the previously-necessary and often tedious nding of the screw-theads. A perfectly-tight closing-bung being especially needed in barrels which are subject to pressure from inside, is therefore principally advantageous to brewers. v The slow and tedious process of securing the bung within the bushing, because of the foaming and steaming of the beer at the time of banging, is a most serious objection; and the leather washer must frequently be renewed, as in time it becomes worn, and if this renewing is not attended to in the proper time, and by a very careful and attentive person, the whole system proves to be a failure.

The object and purpose of my invention, therefore, is to remedy these difficulties, and to construct a bung simple in its parts, and

effective in its operation; and theV invention consists in forming the bung and interior of the bushing slightly conical, .and forming vthereon dat vscrew-threads.

My invention further consists in .a device for inserting the bushing 'in the barrel-stave, the construction and Aarrangement thereof being hereinafter described, and subsequently pointed out in the claims.

In' the accompanying drawings, A represents a bung, of any suitable metal, having a square or other suitably-formed opening, a, for the reception of a wrench, G, as illustrated in Fig. 3.

This bung A is made slightly conical upon its outer periphery, and has formed thereon dat screw-threads b, which engage with ilat screw-threads c upon the interior of the bushing B, said bushing having the ordinaryformed screw-thread upon its exterior, for the insertion of itin the barrel-stave, the bushing also being made conical, to receive the conical bung A.

It will be seen that as the screw-threads are dat upon their edges the bung can be pushed down into the opening in the bushing three-fourths of its thickness without requiring any turning, and one single full turn of the bung will then accomplish a perfect action of the two, bringing every part of the conical surfaces of the bung and bush in action, making a most complete connection. If any lard or other fatty thick substances should be smeared on the bung or into the bushing, or if a piece of rag is laid between them before being connected together, there can be left no space for either airy or fluid matter to pass, for the pressure accomplished by the peculiar form of the screw-threads acting sidewise, as a wedge must be very considerable when force is brought to bear with a wrench in completing the connection between the bung and bushing. Besides, it will be noticed that as the bung is of one solid piece with a strong and -ilat screw-thread, it will stand rough handling. without the danger of injury to the same. The bushing also, as constructed, admits of many advantages, being used with a wooden bung turned conically acrossthe grain,it being pushed into the bushing, and turned by a suitable wrench, D, having two lugs, d, which fit within holes formed in the bung. as ,illustrated at e, the screwthr'eads in the bushing cutting into' the bung.

The second part of my invention has -relation to a means employed for the ready insertion ofthe bushing in the barrel-stave, as will be seen by reference to Fig. 4 ofthe drawing, in which E represents a cylindrical standard or tubing, having screw-threads upon its yinterior for the reception of screw-threads formed upon the upper end of a steel plug, F, the lower portion projecting belowvthe tubing E, having screwfthreads f,/and formed slightly conical to correspond in shape and size to the bung A. Between the lower face of the'tubing and the bung-shaped part of the plug F is interposed a metallic washer, which pre- Ventsa wearing friction on the standard or tubing E, when the bushing is forced into the barrel-stave. Upon the upper end, or near vthe same,'of the tubing E are suitableopeu- 'ings g for the reception of a steel rod or other means that may be foundrmost convenient for operating the inserter. v i

Having n'ow fullyfiescribed my invention what I claim as new, and desire to secure by Letters`Patent, is-

1. The conical bung A, having formed upon its exterior at screwQthreads b, in combination with the-bushing B, with flat screwthreads c, substantially as and for the purpose set forth.

2. The combination, with the standard or tubing E, having screw-threads upon its interior, 4of the screw-threaded'plug F, when constructed to operate substantially as and for the purpose described.

In witness whereof I have hereunto set my hand and seal.

Freiburg, 25th July, 1874.

Y WM. KROMER. Witnesses: l

PHILIPP WEIGKEL, FRIEDRICK KROMER. 

